On MRS Manager, users can view and modify the default service configurations based on site requirements. Configurations can be imported and exported.
You can click to restore a parameter value.
You can also use host groups to change role instance configurations in batches. Choose a role name in Role, and then choose <select hosts> in Host. Enter a name in Host Group Name, select the target host from All Hosts and add it to Selected Hosts. Click OK to add it to the host group. The added host group can be selected from Host and is only valid on the current page. The page cannot be saved after being refreshed.
Click Finish when the system displays Operation succeeded. The service is successfully started.
If you do not restart Yarn after upgrading its queue configuration, you can choosefor the configuration to take effect.
When Operation succeeded is displayed, click Finish. The service is started successfully.